| MD | Players | Club | Nationality | DOB | A(D) |
|---|---|---|---|---|---|
| 20-Oct-2018 |  Florent van Verberghe | Toulon | France | 22-Jul-2000 | 18(90) |
| 08-Dec-2018 | Arthur Vincent | Montpellier | France | 30-Sep-1999 | 19(69) |
| 12-Jan-2019 | Mathieu Smaili | Toulon | France | 30-Aug-1999 | 19(135) |
| 14-Oct-2018 | Jean-Baptiste Gros | Toulon | France | 29-May-1999 | 19(138) |
| 21-Oct-2018 |  Romain Ntamack | Toulouse | France | 01-May-1999 | 19(173) |
| 12-Jan-2019 |  Joseph Heyes | Leicester Tigers | England | 13-Apr-1999 | 19(274) |
| 18-Jan-2019 | Louis Carbonel | Toulon | France | 04-Feb-1999 | 19(348) |
| 13-Oct-2018 | Guram Gogichashvili | Racing CF | Georgia | 04-Sep-1998 | 20(39) |
| 13-Oct-2018 |  Michael Lowry | Ulster | Ireland | 20-Aug-1998 | 20(54) |
| 14-Oct-2018 | Matt Fagerson | Glasgow Warriors | Scotland | 16-Jul-1998 | 20(90) |
| 20-Oct-2018 | Adrien Seguret | Lyon OU | France | 22-Jul-1998 | 20(90) |
| 12-Jan-2019 |  Dan Davis | Scarlets | Wales | 17-Sep-1998 | 20(117) |
| 21-Oct-2018 | Guillaume Marchand | Toulouse | France | 05-Jun-1998 | 20(138) |
| 13-Oct-2018 | Jordan Olowofela | Leicester Tigers | England | 07-Apr-1998 | 20(189) |
| 19-Jan-2019 |  Alex Seville | Gloucester | England | 12-Jul-1998 | 20(191) |
| 09-Dec-2018 | Ben White | Leicester Tigers | Scotland | 27-May-1998 | 20(196) |
| 19-Oct-2018 | Ioan Nicholas | Scarlets | Wales | 03-Apr-1998 | 20(199) |
| 09-Dec-2018 |  Nicholas Isiekwe | Saracens | England | 20-Apr-1998 | 20(233) |
| 15-Dec-2018 | Pierre-Loius Barassi | Lyon OU | France | 22-Apr-1998 | 20(237) |
| 15-Dec-2018 | Stafford McDowell | Glasgow Warriors | Scotland | 24-Feb-1998 | 20(294) |
| 14-Oct-2018 |  Owen Lane | Cardiff Blues | Wales | 20-Dec-1997 | 20(298) |
| 19-Jan-2019 | Ciaran Knight | Gloucester | England | 19-Mar-1998 | 20(306) |
| 20-Oct-2018 | Joe Cokanasiga | Bath | England | 15-Nov-1997 | 20(339) |
| 15-Dec-2018 | Benjamin Earl | Saracens | England | 07-Jan-1998 | 20(342) |
| 07-Dec-2018 |  Adam Radwan | Newcastle Falcons | England | 30-Dec-1997 | 20(342) |
| 19-Jan-2019 | Rhys Carre | Cardiff Blues | Wales | 08-Feb-1998 | 20(345) |
| 18-Jan-2019 | Yoann Cottin | Toulon | France | 31-Jan-1998 | 20(352) |
| 08-Dec-2018 | Ushangi Tcheishvili | Montpellier | Georgia | 29-Aug-1997 | 21(101) |
| 13-Oct-2018 | Zac Mercer | Bath | England | 28-Jun-1997 | 21(107) |
| 13-Oct-2018 |  Darcy Graham | Edinburgh Rugby | Scotland | 21-Jun-1997 | 21(114) |
| 13-Jan-2019 | Shane Lewis-Hughes | Cardiff Blues | Wales | 20-Sep-1997 | 21(115) |
| 12-Jan-2019 | Josh Bayliss | Bath | England | 18-Sep-1997 | 21(116) |
| 21-Oct-2018 | Vincent Giudicelli | Montpellier | France | 25-Jun-1997 | 21(118) |
| 12-Oct-2018 |  Jordan Larmour | Leinster | Ireland | 10-Jun-1997 | 21(124) |
| 14-Oct-2018 | Baptiste Delaporte | Castres | France | 25-May-1997 | 21(142) |
| 21-Oct-2018 | Selevasio Tolofua | Toulouse | France | 31-May-1997 | 21(143) |
| 12-Jan-2019 | Robert Baloucoune | Ulster | Ireland | 19-Aug-1997 | 21(146) |
| 20-Oct-2018 | Max Wright | Bath | England | 24-May-1997 | 21(149) |
| 13-Oct-2018 | Florian Verhaegue | Toulouse | France | 27-Apr-1997 | 21(169) |
| 20-Oct-2018 | Dylan Cretin | Lyon OU | France | 04-May-1997 | 21(169) |
| 14-Dec-2018 |  Sean Lonsdale | Exeter Chiefs | England | 07-Jun-1997 | 21(190) |
| 13-Oct-2018 | Gabriel Ngandebe | Montpellier | France | 30-Mar-1997 | 21(197) |
| 13-Oct-2018 | Darren Atkins | Bath | England | 11-Feb-1997 | 21(244) |
| 19-Jan-2019 | Kevin Yameogo | Lyon OU | France | 19-May-1997 | 21(245) |
| 14-Dec-2018 | Jack Maunder | Exeter Chiefs | England | 05-Apr-1997 | 21(253) |
| 13-Oct-2018 | Blair Kinghorn | Edinburgh Rugby | Scotland | 18-Jan-1997 | 21(268) |
| 12-Jan-2019 | William Evans | Leicester Tigers | England | 28-Jan-1997 | 21(349) |
| 19-Oct-2018 | Josh Macleod | Scarlets | Wales | 27-Oct-1996 | 21(357) |
| 14-Dec-2018 | Joe Simmonds | Exeter Chiefs | England | 19-Dec-1996 | 21(360) |
| 14-Oct-2018 | Johnny Williams | Newcastle Falcons | Wales | 18-Oct-1996 | 21(361) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).